Krobia (genus)
| Krobia | ||||||||||||
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Krobia xinguensis |
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| Scientific name | ||||||||||||
| Krobia | ||||||||||||
| Kullander & Nijssen , 1989 |
Krobia is a genus of South American cichlids . The genus occurs in rivers of the three Guiana countries, in some southern drains of the Guiana Shield thatflowinto the Amazon, and in the upper Rio Xingu in Brazil. The scientific name isthe common name for different species of cichlidsin Suriname . The Krobia species were placed in the collective genus Aequidens before the genus was established.
features
Krobia species can reach a total length of just over twelve centimeters. Their shape is similar to that of the cichlid genera Bujurquina , Tahuantinsuyoa and that of the blue spotted cichlid ( Andinoacara pulcher ). The body is oval, laterally flattened and high back. The forehead line is rounded. The body height is 40 to 50.8% of the standard length . The mouth sits deep and is terminal.
A longitudinal ligament, which is often broken up into spots, extends from the upper edge of the gill cover to the rear end of the dorsal fin. There is often a vertical line under the eye. There are three bandages on top of each other between the eyes. Another feature of the head markings are the colored rein stripes that extend from the rear of the mouth to the eyes. The caudal fin has no pattern or is dark with light dots that are smaller in the caudal fin half than in the upper caudal fin half. Females are less high back, their fins stay shorter.
Fin formula : Dorsal XIII – XV / 9–11, Anale III / 7–9.
The pectoral fins are asymmetrical, the fourth fin ray is the longest; in the case of the pelvic fins it is the first. The caudal fin is straight or is slightly indented. It is supported by 16 main fin rays and six other fin rays. The base of the dorsal fin is scaly, the paired fins are scaly. The sides and throat are covered with comb scales. The upper part of the lateral line is three scales rows above the lower and three (at the beginning) to 1.5 scales rows below the base of the dorsal fin. There are round scales in front of the pelvic fins . The Vorkiemendeckel is without scales, the gill cover occupied with two vertical rows of scales.
Reproduction
Krobia species spawn between transportable substrates, e.g. B. between fall leaves. They form a man-mother family , i. H. the female guards and fanning the clutch, while the male defends the territory. After hatching, the fish larvae are first kept in small pits dug into the bed of the water and, after swimming free, are guided and protected by both parents.
Types and distribution
- Krobia guianensis (Regan, 1905), Demerara in Guyana to Cottica in Suriname .
- Krobia itanyi (Puyo, 1943), Maroni (border river between French Guiana and Suriname).
- Krobia petitella Steele et al., 2013, from the Berbice River in eastern Guyana.
- Krobia xinguensis Kullander, 2012, Rio Xingu basin and headwaters in the state of Mato Grosso / Brazil .
There are two other previously undescribed species in French Guiana.
swell
- Claus Schaefer: Krobia. In: Claus Schaefer, Torsten Schröer (Hrsg.): The large lexicon of aquaristics. 2 volumes. Eugen Ulmer, Stuttgart 2004, ISBN 3-8001-7497-9 , p. 538 f.
- Krobia on Fishbase.org (English)